629 lines
15 KiB
C
629 lines
15 KiB
C
/*
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* $Id: calendar.c,v 1.38 2004/09/18 16:40:42 tom Exp $
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*
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* calendar.c -- implements the calendar box
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*
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* Copyright 2001-2003,2004 Thomas E. Dickey
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "dialog.h"
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#include <time.h>
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#define ONE_DAY (60 * 60 * 24)
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#define MON_WIDE 4 /* width of a month-name */
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#define DAY_HIGH 6 /* maximum lines in day-grid */
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#define DAY_WIDE (8 * MON_WIDE) /* width of the day-grid */
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#define HDR_HIGH 1 /* height of cells with month/year */
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#define BTN_HIGH 1 /* height of button-row excluding margin */
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/* two more lines: titles for day-of-week and month/year boxes */
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#define MIN_HIGH (DAY_HIGH + 2 + HDR_HIGH + BTN_HIGH + (7 * MARGIN))
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#define MIN_WIDE (DAY_WIDE + (4 * MARGIN))
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typedef enum {
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sMONTH = -3
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,sYEAR = -2
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,sDAY = -1
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} STATES;
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struct _box;
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typedef int (*BOX_DRAW) (struct _box *, struct tm *);
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typedef struct _box {
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WINDOW *parent;
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WINDOW *window;
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int x;
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int y;
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int width;
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int height;
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BOX_DRAW box_draw;
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} BOX;
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static int
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days_in_month(struct tm *current, int offset /* -1, 0, 1 */ )
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{
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static const int nominal[] =
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{
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31, 28, 31, 30, 31, 30,
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31, 31, 30, 31, 30, 31
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};
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int year = current->tm_year;
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int month = current->tm_mon + offset;
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int result;
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while (month < 0) {
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month += 12;
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year -= 1;
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}
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while (month >= 12) {
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month -= 12;
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year += 1;
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}
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result = nominal[month];
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if (month == 1)
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result += ((year % 4) == 0);
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return result;
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}
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static int
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days_in_year(struct tm *current, int offset /* -1, 0, 1 */ )
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{
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int year = current->tm_year + 1900 + offset;
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return ((year % 4) == 0) ? 366 : 365;
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}
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static int
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day_cell_number(struct tm *current)
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{
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int cell;
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cell = current->tm_mday - ((6 + current->tm_mday - current->tm_wday) % 7);
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if ((current->tm_mday - 1) % 7 != current->tm_wday)
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cell += 6;
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else
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cell--;
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return cell;
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}
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static int
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next_or_previous(int key, int two_d)
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{
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int result = 0;
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switch (key) {
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case M_EVENT + KEY_PPAGE:
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case KEY_PPAGE:
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case KEY_PREVIOUS:
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case KEY_UP:
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result = two_d ? -7 : -1;
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break;
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case KEY_LEFT:
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case CHR_PREVIOUS:
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case CHR_BACKSPACE:
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result = -1;
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break;
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case M_EVENT + KEY_NPAGE:
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case KEY_NPAGE:
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case KEY_DOWN:
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result = two_d ? 7 : 1;
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break;
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case KEY_RIGHT:
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case CHR_NEXT:
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case KEY_NEXT:
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result = 1;
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break;
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default:
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/*
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* We're already using the left/right arrow keys for traversal. Use
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* vi-style for navigating around the days of the month.
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*/
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if (two_d) {
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switch (key) {
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case 'h':
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result = -1;
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break;
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case 'j':
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result = 7;
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break;
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case 'k':
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result = -7;
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break;
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case 'l':
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result = 1;
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break;
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}
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} else {
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beep();
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}
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break;
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}
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return result;
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}
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/*
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* Draw the day-of-month selection box
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*/
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static int
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draw_day(BOX * data, struct tm *current)
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{
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#ifdef ENABLE_NLS
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char *of_week[] =
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{
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nl_langinfo(ABDAY_1),
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nl_langinfo(ABDAY_2),
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nl_langinfo(ABDAY_3),
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nl_langinfo(ABDAY_4),
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nl_langinfo(ABDAY_5),
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nl_langinfo(ABDAY_6),
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nl_langinfo(ABDAY_7)
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};
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#else
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static const char *const of_week[] =
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{
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"Sunday",
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"Monday",
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"Tuesday",
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"Wednesday",
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"Thursday",
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"Friday",
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"Saturday"
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};
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#endif
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int cell_wide = MON_WIDE;
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int y, x, this_x = 0;
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int save_y = 0, save_x = 0;
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int day = current->tm_mday;
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int mday;
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int week;
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int last = days_in_month(current, 0);
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int prev = days_in_month(current, -1);
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werase(data->window);
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dlg_draw_box(data->parent,
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data->y - MARGIN, data->x - MARGIN,
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data->height + (2 * MARGIN), data->width + (2 * MARGIN),
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menubox_border_attr, menubox_attr); /* border of daybox */
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wattrset(data->window, menubox_attr); /* daynames headline */
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for (x = 0; x < 7; x++) {
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mvwprintw(data->window,
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0, (x + 1) * cell_wide, "%*.*s ",
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cell_wide - 1,
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cell_wide - 1,
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of_week[x]);
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}
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mday = ((6 + current->tm_mday - current->tm_wday) % 7) - 7;
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if (mday <= -7)
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mday += 7;
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/* mday is now in the range -6 to 0. */
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week = (current->tm_yday + 6 + mday - current->tm_mday) / 7;
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for (y = 1; mday < last; y++) {
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wattrset(data->window, menubox_attr); /* weeknumbers headline */
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mvwprintw(data->window,
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y, 0,
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"%*d ",
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cell_wide - 1,
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++week);
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for (x = 0; x < 7; x++) {
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this_x = 1 + (x + 1) * cell_wide;
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++mday;
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if (wmove(data->window, y, this_x) == ERR)
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continue;
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wattrset(data->window, item_attr); /* not selected days */
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if (mday == day) {
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wattrset(data->window, item_selected_attr); /* selected day */
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save_y = y;
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save_x = this_x;
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}
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if (mday > 0) {
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if (mday <= last) {
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wprintw(data->window, "%*d", cell_wide - 2, mday);
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} else if (mday == day) {
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wprintw(data->window, "%*d", cell_wide - 2, mday - last);
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}
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} else if (mday == day) {
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wprintw(data->window, "%*d", cell_wide - 2, mday + prev);
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}
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}
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wmove(data->window, save_y, save_x);
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}
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dlg_draw_arrows(data->parent, TRUE, TRUE,
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data->x + 5,
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data->y - 1,
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data->y + data->height);
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return 0;
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}
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/*
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* Draw the month-of-year selection box
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*/
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static int
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draw_month(BOX * data, struct tm *current)
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{
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#ifdef ENABLE_NLS
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char *months[] =
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{
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nl_langinfo(MON_1),
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nl_langinfo(MON_2),
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nl_langinfo(MON_3),
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nl_langinfo(MON_4),
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nl_langinfo(MON_5),
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nl_langinfo(MON_6),
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nl_langinfo(MON_7),
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nl_langinfo(MON_8),
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nl_langinfo(MON_9),
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nl_langinfo(MON_10),
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nl_langinfo(MON_11),
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nl_langinfo(MON_12)
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};
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#else
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static const char *const months[] =
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{
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"January",
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"February",
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"March",
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"April",
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"May",
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"June",
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"July",
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"August",
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"September",
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"October",
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"November",
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"December"
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};
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#endif
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int month;
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month = current->tm_mon + 1;
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wattrset(data->parent, dialog_attr); /* Headline "Month" */
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(void) mvwprintw(data->parent, data->y - 2, data->x - 1, _("Month"));
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dlg_draw_box(data->parent,
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data->y - 1, data->x - 1,
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data->height + 2, data->width + 2,
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menubox_border_attr, menubox_attr); /* borders of monthbox */
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wattrset(data->window, item_attr); /* color the month selection */
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mvwprintw(data->window, 0, 0, "%s", months[month - 1]);
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wmove(data->window, 0, 0);
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return 0;
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}
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/*
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* Draw the year selection box
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*/
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static int
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draw_year(BOX * data, struct tm *current)
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{
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int year = current->tm_year + 1900;
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wattrset(data->parent, dialog_attr); /* Headline "Year" */
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(void) mvwprintw(data->parent, data->y - 2, data->x - 1, _("Year"));
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dlg_draw_box(data->parent,
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data->y - 1, data->x - 1,
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data->height + 2, data->width + 2,
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menubox_border_attr, menubox_attr); /* borders of yearbox */
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wattrset(data->window, item_attr); /* color the year selection */
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mvwprintw(data->window, 0, 0, "%4d", year);
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wmove(data->window, 0, 0);
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return 0;
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}
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static int
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init_object(BOX * data,
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WINDOW *parent,
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int x, int y,
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int width, int height,
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BOX_DRAW box_draw,
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int code)
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{
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data->parent = parent;
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data->x = x;
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data->y = y;
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data->width = width;
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data->height = height;
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data->box_draw = box_draw;
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data->window = derwin(data->parent,
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data->height, data->width,
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data->y, data->x);
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if (data->window == 0)
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return -1;
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(void) keypad(data->window, TRUE);
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dlg_mouse_setbase(getbegx(parent), getbegy(parent));
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if (code == 'D') {
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dlg_mouse_mkbigregion(y + 1, x + MON_WIDE, height - 1, width - MON_WIDE,
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KEY_MAX, 1, MON_WIDE, 3);
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} else {
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dlg_mouse_mkregion(y, x, height, width, code);
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}
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return 0;
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}
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#define DrawObject(data) (data)->box_draw(data, ¤t)
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/*
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* Display a dialog box for entering a date
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*/
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int
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dialog_calendar(const char *title,
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const char *subtitle,
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int height,
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int width,
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int day,
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int month,
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int year)
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{
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BOX dy_box, mn_box, yr_box;
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int fkey;
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int key = 0;
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int key2;
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int step;
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int button;
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int result = DLG_EXIT_UNKNOWN;
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WINDOW *dialog;
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time_t now_time = time((time_t *) 0);
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struct tm current;
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STATES state = dlg_defaultno_button();
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const char **buttons = dlg_ok_labels();
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char *prompt = dlg_strclone(subtitle);
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int longest;
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int mincols;
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dlg_does_output();
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now_time = time((time_t *) 0);
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current = *localtime(&now_time);
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if (day < 0)
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day = current.tm_mday;
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if (month < 0)
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month = current.tm_mon + 1;
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if (year < 0)
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year = current.tm_year + 1900;
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/* compute a struct tm that matches the day/month/year parameters */
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if (((year -= 1900) > 0) && (year < 200)) {
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/* ugly, but I'd like to run this on older machines w/o mktime -TD */
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for (;;) {
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if (year > current.tm_year) {
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now_time += ONE_DAY * days_in_year(¤t, 0);
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} else if (year < current.tm_year) {
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now_time -= ONE_DAY * days_in_year(¤t, -1);
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} else if (month > current.tm_mon + 1) {
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now_time += ONE_DAY * days_in_month(¤t, 0);
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} else if (month < current.tm_mon + 1) {
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now_time -= ONE_DAY * days_in_month(¤t, -1);
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} else if (day > current.tm_mday) {
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now_time += ONE_DAY;
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} else if (day < current.tm_mday) {
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now_time -= ONE_DAY;
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} else {
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break;
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}
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current = *localtime(&now_time);
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}
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}
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dlg_button_sizes(buttons, FALSE, &longest, &mincols);
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mincols += (0 * MARGIN) + (dlg_button_count(buttons) * 3) - 1;
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if (mincols < MIN_WIDE)
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mincols = MIN_WIDE;
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dlg_auto_size(title, prompt, &height, &width, 0, mincols);
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height += MIN_HIGH - 1;
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if (width < MIN_WIDE)
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width = MIN_WIDE;
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dlg_print_size(height, width);
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dlg_ctl_size(height, width);
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/* FIXME: how to make this resizable? */
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dialog = dlg_new_window(height, width,
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dlg_box_y_ordinate(height),
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dlg_box_x_ordinate(width));
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dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); /* mainbox */
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dlg_draw_bottom_box(dialog);
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dlg_draw_title(dialog, title);
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wattrset(dialog, dialog_attr); /* text mainbox */
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dlg_print_autowrap(dialog, prompt, height, width);
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/* compute positions of day, month and year boxes */
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memset(&dy_box, 0, sizeof(dy_box));
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memset(&mn_box, 0, sizeof(mn_box));
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memset(&yr_box, 0, sizeof(yr_box));
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if (init_object(&dy_box,
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dialog,
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(width - DAY_WIDE) / 2,
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1 + (height - (DAY_HIGH + BTN_HIGH + (5 * MARGIN))),
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DAY_WIDE,
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DAY_HIGH + 1,
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draw_day,
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'D') < 0
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|| DrawObject(&dy_box) < 0)
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return DLG_EXIT_ERROR;
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if (init_object(&mn_box,
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dialog,
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dy_box.x,
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dy_box.y - (HDR_HIGH + 2 * MARGIN),
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(DAY_WIDE / 2) - MARGIN,
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HDR_HIGH,
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draw_month,
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'M') < 0
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|| DrawObject(&mn_box) < 0)
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return DLG_EXIT_ERROR;
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if (init_object(&yr_box,
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dialog,
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dy_box.x + mn_box.width + 2,
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mn_box.y,
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mn_box.width,
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mn_box.height,
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draw_year,
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'Y') < 0
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|| DrawObject(&yr_box) < 0)
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return DLG_EXIT_ERROR;
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|
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while (result == DLG_EXIT_UNKNOWN) {
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BOX *obj = (state == sDAY ? &dy_box
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: (state == sMONTH ? &mn_box :
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(state == sYEAR ? &yr_box : 0)));
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button = (state < 0) ? 0 : state;
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dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
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if (obj != 0)
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dlg_set_focus(dialog, obj->window);
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key = dlg_mouse_wgetch(dialog, &fkey);
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|
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if ((key2 = dlg_char_to_button(key, buttons)) >= 0) {
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result = key2;
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} else {
|
|
/* handle non-functionkeys */
|
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if (!fkey) {
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fkey = TRUE;
|
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switch (key) {
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case ' ':
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case '\n':
|
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case '\r':
|
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key = KEY_ENTER;
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break;
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case TAB:
|
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key = DLGK_NEXT_FIELD;
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break;
|
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case CHR_PREVIOUS:
|
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case CHR_NEXT:
|
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case CHR_BACKSPACE:
|
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case 'h':
|
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case 'j':
|
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case 'k':
|
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case 'l':
|
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/* treat these as function-keys */
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break;
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case ESC:
|
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result = DLG_EXIT_ESC;
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fkey = FALSE;
|
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break;
|
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default:
|
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fkey = FALSE;
|
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break;
|
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}
|
|
}
|
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|
|
/* handle functionkeys */
|
|
if (fkey) {
|
|
switch (key) {
|
|
case M_EVENT + 'D':
|
|
state = sDAY;
|
|
break;
|
|
case M_EVENT + 'M':
|
|
state = sMONTH;
|
|
break;
|
|
case M_EVENT + 'Y':
|
|
state = sYEAR;
|
|
break;
|
|
case KEY_ENTER:
|
|
result = dlg_ok_buttoncode(button);
|
|
break;
|
|
case DLGK_PREV_FIELD:
|
|
case KEY_BTAB:
|
|
state = dlg_prev_ok_buttonindex(state, sMONTH);
|
|
break;
|
|
case DLGK_NEXT_FIELD:
|
|
state = dlg_next_ok_buttonindex(state, sMONTH);
|
|
break;
|
|
default:
|
|
step = 0;
|
|
key2 = -1;
|
|
if (key >= M_EVENT) {
|
|
if ((key2 = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
|
|
result = key2;
|
|
break;
|
|
} else if (key >= (M_EVENT + KEY_MAX)) {
|
|
state = sDAY;
|
|
obj = &dy_box;
|
|
key2 = 1;
|
|
step = (key
|
|
- (M_EVENT + KEY_MAX)
|
|
- day_cell_number(¤t));
|
|
}
|
|
}
|
|
if (obj != 0) {
|
|
if (key2 < 0)
|
|
step = next_or_previous(key, (obj == &dy_box));
|
|
if (step != 0) {
|
|
struct tm old = current;
|
|
|
|
/* see comment regarding mktime -TD */
|
|
if (obj == &dy_box) {
|
|
now_time += ONE_DAY * step;
|
|
} else if (obj == &mn_box) {
|
|
if (step > 0)
|
|
now_time += ONE_DAY *
|
|
days_in_month(¤t, 0);
|
|
else
|
|
now_time -= ONE_DAY *
|
|
days_in_month(¤t, -1);
|
|
} else if (obj == &yr_box) {
|
|
if (step > 0)
|
|
now_time += (ONE_DAY
|
|
* days_in_year(¤t, 0));
|
|
else
|
|
now_time -= (ONE_DAY
|
|
* days_in_year(¤t, -1));
|
|
}
|
|
|
|
current = *localtime(&now_time);
|
|
|
|
if (obj != &dy_box
|
|
&& (current.tm_mday != old.tm_mday
|
|
|| current.tm_mon != old.tm_mon
|
|
|| current.tm_year != old.tm_year))
|
|
DrawObject(&dy_box);
|
|
if (obj != &mn_box && current.tm_mon != old.tm_mon)
|
|
DrawObject(&mn_box);
|
|
if (obj != &yr_box && current.tm_year != old.tm_year)
|
|
DrawObject(&yr_box);
|
|
(void) DrawObject(obj);
|
|
}
|
|
} else if (state >= 0) {
|
|
if (next_or_previous(key, FALSE) < 0)
|
|
state = dlg_prev_ok_buttonindex(state, sMONTH);
|
|
else if (next_or_previous(key, FALSE) > 0)
|
|
state = dlg_next_ok_buttonindex(state, sMONTH);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
dlg_del_window(dialog);
|
|
sprintf(dialog_vars.input_result, "%02d/%02d/%0d\n",
|
|
current.tm_mday, current.tm_mon + 1, current.tm_year + 1900);
|
|
dlg_mouse_free_regions();
|
|
free(prompt);
|
|
return result;
|
|
}
|